PORSCHE HAS RELEASED a video and fresh photos of the new limited edition 911 Sport Classic set to make its debut at the upcoming Frankfurt Motor Show on September 15.

The new retro-style 911 will join the updated 997 Turbo and GT3 RS on the German automaker's podium.

A tribute to the classic 911s of the 1960s and 1970s, and foregoing the marque's more sophisticated drivetrain technology in favour of a purer retro-style driving experience, the Porsche 911 Sport Classic has "collectible investment" written all over it.

Based on the 911 Carrera S, the Sport Classic receives a modest 17kW power boost to its 3.8 litre naturally-aspirated inline six, bringing total output to 300kW.

A new variable-resonance intake manifold is largely responsible for the Sport Classic's improved power figure, and also increases peak torque to 420Nm. The engine bay is dressed up by the addition of a carbon fibre airbox, and polished exhaust tips cap off the tuned-length exhaust system.

A six-speed manual transmission is the only gearbox offered with power delivered to the rear wheels via a limited slip differential.

Ceramic brakes are standard, and hide behind 19-inch alloys designed to evoke the iconic Fuchs wheels of classic 911s.

The Sport Classic's mechanical package provides enough grunt to propel the car from rest to 100km/h in just 4.6 seconds - one-tenth faster than the standard Carrera S manual upon which it's based.

Top speed is a heady 302km/h and fuel consumption on the European combined cycle is 10.6 l/100km.

But mechanical muscle is just one facet of the 991 Sport Classic's appeal. The car's retro-inspired styling with double-domed roof, ducktail rear spoiler and unique front and rear bumpers (pinched from the AWD 911 variants), are certain to appeal to Porsche buyers.

Only one paint colour - Sport Classic Grey - is available.

Inside, Porsche has treated the Sport Classic to acres of brown leather. Cow-hide adorns virtually every surface - even the air vent louvres - and a special woven leather/yarn material has been applied to the seat centre panels.

A 13-speaker BOSE sound system is standard on the Sport Classic, as is Porsche's Sport Chrono lap timing/launch control system.

Only 250 cars will be produced, and European sales will commence later this year/early next year. Australian availability has not been confirmed, but expect to see more of Porsche's newest special-edition model at the Frankfurt Motor Show on September 15.